{"ob_id":74897,"names":[],"terms":[{"ob_id":126,"label":"units","value":"ug m-3","vocabulary":""},{"ob_id":66246,"label":"standard_name","value":"mass_concentration_of_nitrogen_dioxide_in_air","vocabulary":""},{"ob_id":76203,"label":"var_id","value":"mass_concentration_of_nitrogen_dioxide_in_air","vocabulary":""}]}